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The temperature of a gas flowing in a long duct as measured by thermocouple (having an emissivity of 0.5) is 800 K. The internal wall surface of the duct is at a temperature of 500 K. The convective heat transfer coefficient between the gas and the tip of the thermocouple is 100 W-1 . K .-1 The actual gas temperature is actually . . . . . . . . K.

The temperature of a gas flowing in a long duct as measured by thermocouple (having an emissivity of 0.5) is 800 K. The internal wall surface of the duct is at a temperature of 500 K. The convective heat transfer coefficient between the gas and the tip of the thermocouple is 100 W-1 . K .-1 The actual gas temperature is actually . . . . . . . . K. Correct Answer 900

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